Test Description

WARNING: This page is about a different car, the 2004 Saturn Ion Red Line, 2004 Saturn Ion 3, 2004 Saturn Ion 2, and 2004 Saturn Ion 1. However, it is still accessible from the selected car via links, so may be relevant.

The numbers below refer to the step numbers on the diagnostic table.

2: Lack of communication may be due to a partial malfunction of the class 2 serial data circuit or due to a total malfunction of the class 2 serial data circuit. The specified procedure will determine the particular condition.
3: The symptom list in Symptoms will determine the correct diagnostic procedure to use.

Diagnostic System Check - Cruise Control (2.2L)

Step	Action	Yes	No
1	Install a scan tool. Does the scan tool power up?	Go to Step 2	Go to Scan Tool Does Not Power Up in Data Link Communications
2	Turn ON the ignition, with the engine OFF. Attempt to establish communication with the engine control module (ECM). Does the scan tool communicate with the engine control module?	Go to Step 3	Go to Data Link References in Data Link Communications
3	Select the ECM display DTC function on the scan tool. Does the scan tool display any cruise control DTCs?	Go toScan Tool Data List in Cruise Control	Go toSymptoms - Cruise Control